build(deps): bump codecov/codecov-action from 3 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...v4)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build.yml

@@ -19,12 +19,12 @@ jobs:
       - name: test
         run: |
           go test -v -failfast -race -coverpkg=./... -covermode=atomic -coverprofile=coverage.txt ./...
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         if: matrix.os == 'ubuntu-latest'
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.txt
-      - uses: codecov/codecov-action@v3
+      - uses: codecov/codecov-action@v4
         name: Upload coverage reports to Codecov
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}